Our Team

There is no ‘i’ in team

Team Matero is a diverse mix of people from different backgrounds with different experiences. Many of us have served our nations, so service and purpose forms the core of our culture, it is inclusive and highly infectious.

We are ‘can do’, highly accountable and our collective mission is to empower and take everyone we work with on the journey, while leaving a lasting legacy of enduring achievement behind us.



Dan McDonough

One of the founding partners, with a deep background in financial service companies and regulators. As a senior director, Dan set up the Deloitte military talent programme. Having held C-suite posts in Risk, Audit and Info Security, Dan is routinely sought out by other C-suite leaders for his expertise tech risk related advisory.

Stuart Tootal

A former soldier and global head at Barclays, Stuart founded Matero with Dan because of a shared belief in fusing military learns with commercial acumen to benefit business. Influenced by behavioural human science input, Stuart has been engaged as a change thought leader by over fifty FSTE/Fortune companies.

Jon Little

Jon spent 8 years in the British Army before a decade in senior leadership appointments in Barclays and PwC, where he was the Chief Security Officer. Drawing on a depth of commercial experience and a military background, and motivated to help organisations adapt and thrive in pursuit of their goals, Jon transitioned into Management Consulting with a focus on business operations and interim management roles.

Katie Volker

Katie served 6 years in the British Army before moving to KPMG as a Project Manager. Specialising in operational management, process improvement and governance, she moved to Matero as a Senior Management Consultant in November 2020. She is particularly interested in using coaching frameworks to facilitate change drawing on her leadership experience in both the military and commercial sectors.

Humphrey Bradley

Humphrey served 30 years in the Army before becoming a Business Transformation Programme Manager, specialising in the delivery of Business Process Optimisation using a variety of methodologies including Lean Six Sigma, Agile & SAFe. Humphrey has experience in delivering these programmes across, the Banking, Gaming, Retail, Telco, Defence & Ed Tech sectors.

Jane Zonnenberg

As an audit, accounting and risk professional, Jane has over 25 years’ experience in the Financial Services sector, starting out in external audit with PwC, and subsequently moving into internal audit within the Life Assurance sector in South Africa. The past 10 years have been spent building up a specialism in risks and controls within Insurance specifically within the Lloyd’s market. Drawing on skills gained whilst in external audit, Jane utilised audit disciplines whilst holding senior roles with two Lloyd’s managing agents, where she implemented robust control frameworks across both businesses, at the same time delivering several high-profile projects.

Max Osei

Max is a Senior Project Manager with over 25 years corporate and tech experience, with the previous 12 years successfully managing change across a variety of industries such as the financial services, insurance industry and government sectors. Max joined Matero in September 2020.

Jim Adamson

Jim served in the British army for 6 years before leaving in 2012, after which he specialised in high-risk security consultancy and Project Management for the Oil & Gas industry, operating in Africa, South America and the Middle East. More recently he has provided Programme and Change Management Consultancy to C-Suite leadership across numerous industries, including demolition & civil engineering, large-scale sporting events, high-tech manufacturing, and software development.

Brett Jackson

Brett has 20 years’ international experience in client relationship management, business and client development, leading teams and strategy in finance and the British Army. After 17 years in the Army Brett transitioned to financial services drawing on a wealth of experience and skills in communication, teamwork, leadership and management. Leading multiple operations and diplomatic engagements in the Army and delivering complex financial solutions to Ultra High Net Worth Clients at JP Morgan. Latterly Brett has Business development, Deal Origination and Capital Raising experience for both Private Equity and Venture Capital Funds.

Tom Scriven Baker

Tom Spent 8 years in the Army and joined the Matero team in October 2019. Since then he has worked as a consulting project manager on change management projects in a number of industries, utilising extensive experience in leading teams and delivering projects across the globe in arduous environments.

Talent Pool – The MAC

The team reflects the diversity and depth of talent that Matero draws upon from a pool of broad-industry and change-leadership experience, called the MAC (Matero Associate Community). MAC team members must meet exacting entry and MECCAR training standards. We continue to grow and nurture the MAC by engagements, experience, and community activities. As one MAC member said, ‘Matero is putting the soul back into consultancy’.

Internship and Talent Outplacement

Talent and community includes running military career-transition internships for a limited number A-grade candidates, which also help individuals find permanent roles in other organisations.

Our Values:

Accountability, Action Orientation, Agility and Decency